Corner-bead.



G. D. CLARK.

CORNER BEAD. APPLICATION FILED FEB/2s, 1909.

Patented Jan. 27, 1914.

TINITED STATE$ PATENT @FFIQE.

GEORGE DWIGHT CLARK, OF PLAINVILLE, CONNECTICUT.

CORNER-BEAD.

To all 'w/m/n it may concern Be it known that I, GEORGE D. CLARK, a citizen of the United States, residing at Plainville, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Corner-- Beads, of which the following is a specifica tion.

The principal objects of this invention are to secure strength, rigidity, lightness, general utility and economy of manufacture.

In its simplest embodiment it consists of a strip of metal having arms cut out from between its edges and bent over so as to serve as means for attachment and leaving openings for the plaster. Preferably the strip is double and the arms project from opposite sides. A number of forms of the invention are possible by varying different details. Some of these are illustrated in the accompanying single sheet of drawings.

Figure 1, is a side View of a fragment of corner bead embodying one form of my in vention with double body and short arms, part being broken away. Fig. 2, is a horizontal sectional view of the same on the plane of the line X-X of Fig. 1. Figs. 3 and l are similar views of modifications of the form of Figs. 1 and 2. Fig. 5, is a side View of a fragment of corner bead embodying another form of my invention with double body and long arms, part being broken away. Fig. 6, is a horizontal sectional VlQW of the same on the plane of the line Y Y of Fig. 5. Figs. 7 and 8 are similar views of modifications of the form of Figs. 5 and 6. Fig. 9, is a side View of a fragment of a simpler form of my invention with single body and short arms. Fig. 10, is a plan view of the same.

The strip from which the bead of Figs. 1 and 2 is formed is folded along the center to present a rigid front or exposed edge, 1. The edges 2 and 8 of the strip constitute the rear edges of the bead. At intervals along opposite sides are arranged arms or ears such as 1 and 5 preferably in pairs projecting laterally and rearwardly at about equal Specification of Letters Patent.

Application filed February 23, 1909.

Patented J an. 27, 191 1. Serial No. 479,621.

angles, an arm 5 being opposite an arm 4. Arm 5 is below arm 5. These arms are formed by cutting out pieces of the metal and folding them over at the desired angles preferably against the edges 2 and 3 and at about 45 to the main body. The openings 6 and 7 formed by displacing these arms permit plaster to enter and anchor securely. The edges 2 and 3 being turned outwardly stiffen the structure Very materially.

In Fig. 3, I have shown the front edge shaped so as to give a broader exposed surface and stiffen the bead laterally. The edges 9 and 10 are left projecting directly to the rear but might be turned outwardly as in Fig. 2.

In Fig. 4 the rear edges 11 and 12 are turned out at substantially right angles to the body so as to greatly increase the rigidity of the body and its holding power in the plaster. The arms 13 and 14 are bent out from within to the desired angle. The angle between the arms in any case will depend of course upon the location in which the bead is to be used and whether on external or in ternal corners.

The forms thus far described are suitable for various kinds and conditions of work. here however long arms are required for attaching purposes, the forms shown in Figs. 5, 6, 7 and 8 are preferable. In Figs. 5 and 6, the arms 15 and 16 are preferably opposite each other and are cut from the sides of the bead and folded as at 17 and 18 on diagonal lines and then bent outwardly as at 19 and 20. Arm 16 is below arm 16. This method of construction enables me to have practically any length of arm by simply spacing them far enough apart, the arms being cut lengthwise of the strip. In Fig. 6 the edges 21 and 22 project to the rear but they may be bent outwardly as at 23 and 24 in Fig. 7 which stifiens the structure and reduces the extent of its projection beyond its support. The sides may be folded together to produce a thinner front edge as at 25 in Fig. 7 if desired. In Fig. 8 I have shown the rear edges 26 and 27 bent outwardly and the arms 28 and 29 folded and bent from within. The rear edges may be bent out at right angles as shown in Fig. 4 if desired to give greater rigidity.

The bead of Figs. 9 and 10 is made from a single thickness of metal 30 and the arms or ears 31 and 32 are cutand bent laterally preferably alternately to the right and left at about 45 to the body portion. Of course the attaching arms, fingers or ears may be perforated in any suitable manner to make it more convenient to erect.

While this structure is primarily a corner bead or plasterers straight edge I wish it understood that it may be curved or bent as is often required and that the particular place of use is immaterial. It is possible by this invention to obtain almost any length of attaching arms even from a narrow strip. There is practically no waste of metal. The body is left continuous along both edges and therefore strong. The double form is very rigid especially when the rear edges are bent outwardly. The bending over of the arms stiffens the body considerably along the rear edges. The construction is readily manufactured and may be erected in the usual manner. I do not Wish it understood that I consider all the different varieties on a common footing except as regards the broad idea. Each form has its own advantage as to strength, cost, utility, etc.

Vhile for ordinary work the construction with spaced arms is sufficiently rigid and perfectly acceptable there are cases where it is desirable to have greater lateral stiffness; This may be provided by bending the rear edges outwardly for instance as shown in Figs. 1, 2, 4, 7 and 8. I have found that very satisfactory results can also be accomplished in an inexpensive manner by attaching longitudinal wires or strips to the arms. This is effective even with the simpler forms of construction such as shown in Figs. 9 and 10. The wires 33, 34: are secured in any suitable manner preferably by bending or coiling the ends of the arms around the wires as at 35, 36. The size and cross sectional shape of the wires are unimportant but I have found that a small round wire is sufficiently strong and easily attached. Any of the forms herein shown may be provided with the wire side mem bers when desired.

In Figs. 5 and 6 the side wires to and 41 are secured respectively to the arms 15 and 16 (and 16) as at 42 and 43 (and 4-3) by bending over the ends of the arms. This form of construction combining the feature of the double or folded body and the wire side members is particularly rigid. It is therefore so much easier to handle, pack and ship as to make its ultimate cost delivered but little if any greater than the forms requiring less metal.

WVhat I claim is 1. A corner bead comprising a body hav ing a continuous front edge strip and a continuous rear edge strip with a connecting web portion integrally uniting the front and rear edge strips and integral attaching arms having one end of each cut from the intermediateweb portion of the body to thereby leave the edge strips entire and provide bonding openings in the web portion between the front and rear edge strips, the said arms being bent backward against the rear edge, some of said arms being bent to one side and others to the opposite side of the web portion from which they are cut and extending divergently beyond and in rear of the continuous rear edge strip with an unobstructed corner receiving angle between said arms.

2. A corner bead comprising a metal strip folded longitudinally to form a double front edge and two continuous rear edges close together and integral arms cut from the sides between the front and rear edges and leaving openings and bent so as to lie against the sides near their points of attachment and having their free ends bent outwardly, the arms on one side diverging from those on the other side.

3. A corner bead comprising a metal body having a longitudinal front edge, two sets of spaced flat arms cut from the metal of the body to the rear of the front edge, one set being bent so as to diverge to one side and the other to the opposite'side of the front edge and a longitudinal wire secured to the arms of each set along the opposite sides.

at. A corner bead comprising a metal body having a longitudinal front edge, two sets of spaced arms out from the metal of the body to the rear of the front edge, one set being bent so as to diverge to one side and the other to the opposite side of the front edge and two longitudinal wires, the ends of the arms of each set being bent around and secured to one of the wires.

A corner bead comprising a longitudinal strip of metal constituting a body having portions cut therefrom and forming arms and leaving openings, one set of said arms being bent outwardly and rearwardly at one side of the body and the other set of said arms being bent outwardly and rearwardly at the opposite side and longitudinal side wires secured to the opposite sets of arms.

6. A metal corner bead comprising a metal body folded longitudinally to form a double continuous front edge strip and two continuous rear edge strips integrally connected therewith and integral attaching arms having one end of each cut from the sides of the folded metal body intermediate the continuous front edge strip and the continuous rear edge strips to thereby leave the rear edge strips entire and provide bondstrips with an unobstructed corner receiving ing openings in the folded sides of the body, angle between them. the said attaching arms being bent outwardly from the intermediate side portions GEORGE DNIGHrl CLARIX 5 from Which they are cut to opposite sides of WVitnesses:

the body and extending divergently beyond MARY G. CLARK,

and in rear of the continuous rear edge MARSHALL P. RYDER.

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

